The Minnesota Vikings’ Rondale Moore, attempting to return to action after missing all of last season with a knee injury, exited the team’s preseason opener on Saturday with an apparent lower left leg injury during a second-quarter punt return against the Houston Texans.

After the game, Vikings coach Kevin O’Connell told reporters that there’s “pretty significant concern for a serious knee injury.” The team will provide more details on Moore as they become available.

With Minnesota trailing 7-6, Moore returned a punt 2 yards before Houston linebacker Jamal Hill tackled him along the sideline. Moore stayed on the ground and was carted off the field.

This came nearly a year to the day after Moore, then with Atlanta, was carted off the practice field after suffering a right knee injury that required surgery and forced the wideout to miss the entire season.

A fifth-year pro out of Purdue, Moore looked to revive his career with Minnesota following a three-year stint with Arizona. In 39 career games (23 starts), all with the Cardinals, Moore has recorded 135 catches for 1,201 yards and three touchdowns.

The Vikings’ unofficial depth chart listed Moore as a backup receiver and the starting punt returner heading into Saturday’s game.

–Field Level Media